Artykuł w czasopiśmie
Brak miniatury
Licencja
 

Over 78 000 RR Lyrae Stars in the Galactic Bulge and Disk from the OGLE Survey

Uproszczony widok
dc.abstract.enWe present an upgrade of the OGLE Collection of RR Lyrae stars in the Galactic bulge and disk. The size of our sample has been doubled and reached 78 350 RR Lyr variables, of which 56 508 are fundamental-mode pulsators (RRab stars), 21 321 pulsate solely in the first-overtone (RRc stars), 458 are classical double-mode pulsators (RRd stars), and 63 are anomalous RRd variables (including six triple-mode pulsators). For all the newly identified RR Lyr stars, we publish time-series photometry obtained during the OGLE Galaxy Variability Survey. We present the spatial distribution of RR Lyr stars on the sky, provide a list of globular clusters hosting RR Lyr variables, and discuss the Petersen diagram for multimode pulsators. We find new RRd stars belonging to a compact group in the Petersen diagram (with period ratios P<SUB> 1O</SUB>/P<SUB>F</SUB>≍0.74 and fundamental-mode periods P<SUB> F</SUB>≍0.44$ d) and we show that their spatial distribution is roughly spherically symmetrical around the Milky Way center.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorSoszyński, Igor
dc.contributor.authorUdalski, Andrzej
dc.contributor.authorWrona, Marcin
dc.contributor.authorSzymański, Michał
dc.contributor.authorPietrukowicz, Paweł
dc.contributor.authorSkowron, Jan
dc.contributor.authorSkowron, Dorota
dc.contributor.authorPoleski, Radosław
dc.contributor.authorKozłowski, Szymon
dc.contributor.authorMróz, Przemysław
dc.contributor.authorUlaczyk, Krzysztof
dc.contributor.authorRybicki, Krzysztof
dc.contributor.authorIwanek, Patryk
dc.contributor.authorGromadzki, Mariusz
dc.date.accessioned2024-01-25T16:10:14Z
dc.date.available2024-01-25T16:10:14Z
dc.date.copyright2019-12-31
dc.date.issued2019
dc.description.accesstimeBEFORE_PUBLICATION
dc.description.financeNie dotyczy
dc.description.number4
dc.description.versionORIGINAL_AUTHOR
dc.description.volume69
dc.identifier.doi10.32023/0001-5237/69.4.2
dc.identifier.issn0001-5237
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/115144
dc.identifier.weblinkhttp://adsabs.harvard.edu/abs/2019AcA....69..321S
dc.languageeng
dc.pbn.affiliationastronomy
dc.relation.ispartofActa Astronomica
dc.relation.pages321-337
dc.rightsOther
dc.sciencecloudnosend
dc.titleOver 78 000 RR Lyrae Stars in the Galactic Bulge and Disk from the OGLE Survey
dc.typeJournalArticle
dspace.entity.typePublication